Comparação entre testes ecoteste e ft-nir para detecção de resíduos de antimicrobiano veterinário de carência zero em leite genuíno

Abstract

The objective of the present work is to verify the presence of traces of the antibiotics Terramycin and CEF50 (no withdrawall period) in raw milk samples through following analyzes: immunoassay and Fourier Transform Near Infrared Spectroscopy ( FT-NIR) coupled to Principal Component Analysis (PCA). The analyzes were carried out at the Laboratories of Products and Processes (LPP) and Materials Spectroscopy (LEM), both of the Department of Physics of the Federal University of Juiz de Fora – MG. Samples were collected directly from cows from Coronel Pacheco (MG) Embrapa Milk Cattle farm, there was a difference in the results of the samples of antibiotic traces, the sample without deficiency was positive for infrared test and negative for immunotest analysis. Consequently, according to the eco-test it is not possible to say if the tested milk presents problems for the consumption of milk and the production of its derivatives, since this type of test is qualitative, with positive or negative diagnosis. Infrared, on the other hand, has a greater sensitivity, being able to detect the traces of antibiotic.